73 lines
3.2 KiB
C++
73 lines
3.2 KiB
C++
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//===- unittest/Format/TokenAnnotatorTest.cpp - Formatting unit tests -----===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Format/Format.h"
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#include "FormatTestUtils.h"
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#include "TestLexer.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace format {
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namespace {
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class TokenAnnotatorTest : public ::testing::Test {
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protected:
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TokenList annotate(llvm::StringRef Code,
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const FormatStyle &Style = getLLVMStyle()) {
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return TestLexer(Allocator, Buffers, Style).annotate(Code);
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}
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llvm::SpecificBumpPtrAllocator<FormatToken> Allocator;
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std::vector<std::unique_ptr<llvm::MemoryBuffer>> Buffers;
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};
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#define EXPECT_TOKEN_KIND(FormatTok, Kind) \
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EXPECT_EQ((FormatTok)->Tok.getKind(), Kind) << *(FormatTok)
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#define EXPECT_TOKEN_TYPE(FormatTok, Type) \
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EXPECT_EQ((FormatTok)->getType(), Type) << *(FormatTok)
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#define EXPECT_TOKEN(FormatTok, Kind, Type) \
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do { \
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EXPECT_TOKEN_KIND(FormatTok, Kind); \
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EXPECT_TOKEN_TYPE(FormatTok, Type); \
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} while (false);
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TEST_F(TokenAnnotatorTest, UnderstandsUsesOfStarAndAmpInMacroDefinition) {
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// This is a regression test for mis-parsing the & after decltype as a binary
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// operator instead of a reference (when inside a macro definition).
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auto Tokens = annotate("auto x = [](const decltype(x) &ptr) {};");
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EXPECT_EQ(Tokens.size(), 18u) << Tokens;
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EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown);
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EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen);
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EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown);
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EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
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EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference);
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// Same again with * instead of &:
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Tokens = annotate("auto x = [](const decltype(x) *ptr) {};");
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EXPECT_EQ(Tokens.size(), 18u) << Tokens;
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EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
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EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference);
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// Also check that we parse correctly within a macro definition:
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Tokens = annotate("#define lambda [](const decltype(x) &ptr) {}");
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EXPECT_EQ(Tokens.size(), 17u) << Tokens;
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EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown);
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EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen);
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EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown);
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EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
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EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference);
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// Same again with * instead of &:
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Tokens = annotate("#define lambda [](const decltype(x) *ptr) {}");
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EXPECT_EQ(Tokens.size(), 17u) << Tokens;
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EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
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EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference);
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}
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} // namespace
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} // namespace format
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} // namespace clang
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